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type_like_feature.e
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1999-06-05
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-- This file is part of SmallEiffel The GNU Eiffel Compiler.
-- Copyright (C) 1994-98 LORIA - UHP - CRIN - INRIA - FRANCE
-- Dominique COLNET and Suzanne COLLIN - colnet@loria.fr
-- http://SmallEiffel.loria.fr
-- SmallEiffel is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version. SmallEiffel is distributed in the hope that it will be useful,but
-- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details. You should have received a copy of the GNU General
-- Public License along with SmallEiffel; see the file COPYING. If not,
-- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-- Boston, MA 02111-1307, USA.
--
class TYPE_LIKE_FEATURE
--
-- For an anchored declaration type mark using a feature name.
--
-- See also TYPE_LIKE_ARG and TYPE_LIKE_CURRENT.
--
inherit TYPE_ANCHORED redefine is_like_feature, like_feature end;
creation make, with
feature
like_what: FEATURE_NAME;
written_mark: STRING;
run_type: TYPE;
-- When runnable.
feature {NONE}
make(sp: like start_position; lw: like like_what) is
require
sp /= Void;
lw /= Void
do
start_position := sp;
like_what := lw;
tmp_written_mark.copy(fz_like);
tmp_written_mark.extend(' ');
like_what.declaration_in(tmp_written_mark);
written_mark := string_aliaser.item(tmp_written_mark);
ensure
start_position = sp
end;
with(model: like Current; rt: like run_type) is
require
model /= Void;
rt /= Void
do
start_position := model.start_position;
like_what := model.like_what;
written_mark := model.written_mark;
run_type := rt;
ensure
start_position = model.start_position;
like_what = model.like_what;
written_mark = model.written_mark;
run_type = rt;
end;
feature
is_like_feature: BOOLEAN is true;
is_like_current: BOOLEAN is false;
is_like_argument: BOOLEAN is false;
static_base_class_name: CLASS_NAME is
local
bc: BASE_CLASS;
e_feature: E_FEATURE;
rt: TYPE;
do
bc := start_position.base_class;
e_feature := bc.e_feature(like_feature);
if e_feature /= Void then
rt := e_feature.result_type;
if rt /= Void then
Result := rt.static_base_class_name;
end;
else
eh.append(fz_bad_anchor);
eh.add_position(start_position);
eh.print_as_fatal_error;
end;
end;
like_feature: FEATURE_NAME is
do
Result := like_what;
end;
is_run_type: BOOLEAN is
do
Result := run_type /= Void;
end;
to_runnable(ct: TYPE): like Current is
local
rc: RUN_CLASS;
rt: TYPE;
do
anchor_cycle_start;
rc := ct.run_class;
rt := rc.get_result_type(like_what);
if run_type = Void then
run_type := rt;
Result := Current;
elseif run_type = rt then
Result := Current;
else
!!Result.with(Current,rt);
end;
anchor_cycle_end;
end;
is_a(other: TYPE): BOOLEAN is
local
tlf: like Current;
do
if other.is_like_feature then
tlf ?= other;
if like_what.to_string = tlf.like_what.to_string then
Result := true;
--eh.add_position(other.start_position);
--warning(start_position,"YOO");
else
Result := run_type.is_a(other);
end;
else
Result := run_type.is_a(other);
end;
if not Result then
eh.add_position(start_position);
end;
end;
feature {TYPE}
short_hook is
do
short_print.hook_or("like","like ");
like_what.short;
end;
end -- TYPE_LIKE_FEATURE